JP6925931B2 - How to replace the blades in a batch type kneader and a batch type kneader - Google Patents

Description

The present invention relates to a batch type kneader, a blade portion used in a batch type kneader, and a method for exchanging a blade portion in a batch type kneader.

Patent Document 1 discloses a biaxial kneader in which two rotors having a kneading blade and a screw are supported by bearings at both ends in the axial direction. During operation of this twin-screw kneader, torque is transmitted from each drive shaft to each rotor body via a spline fitting portion, and the material to be kneaded is kneaded and discharged while advancing in a predetermined direction. The rotor of Patent Document 1 is divided by a rotor body having a kneading blade and a drive shaft, and the rotor body and the drive shaft are spline-coupled by a spline fitting portion. Then, when repairing or inspecting the rotor body, the rotor body is removed from the drive shaft via the spline fitting portion. Therefore, since the drive shaft is not removed, it is not necessary to disassemble the bearing box provided with the bearing that supports the drive shaft.

Japanese Unexamined Patent Publication No. 4-14411

However, in the field of kneading the kneaded material, a batch type kneader that is discharged after the kneading of the kneaded material is completed has also been proposed. Therefore, even in such a batch type kneader, a configuration in which the rotor body having the kneading blade can be easily removed is desired.

Therefore, the present invention has been made in view of the above-mentioned problems, and the blade portion used in the batch type kneader, the blade portion used in the batch type kneader, and the blade portion in the batch type kneader, in which the blade portion can be easily removed. The purpose is to provide a replacement method.

The characteristic configuration of the batch type kneader according to the present invention is
A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft .
The coupling mechanism has a spline coupling portion and has a spline coupling portion.
The coupling mechanism is adjacent to the spline coupling portion along the axial direction of the rotor shaft, and further has a fitting portion in which the annular surface of the drive shaft and the annular surface of the blade portion are fitted. ..

According to this feature configuration, the blade portion and the drive shaft are integrally rotatably coupled by the coupling mechanism, and the kneading material in the mixing tank can be kneaded by the blade portion by receiving the drive from the drive shaft. The blades are configured to be separable from the drive shaft. Therefore, for example, when replacing, repairing, or inspecting the blades, only the blades can be easily attached and detached while the drive shaft is assembled to the batch type kneader. Therefore, the work efficiency can be improved and the work time can be shortened as compared with the case where the drive shaft and the blade portion are integrally attached and detached.

Further , according to this feature configuration, since the blade portion and the drive shaft are spline-coupled, the rotational torque of the drive shaft can be transmitted to the blade portion, and the blade portion slides in the axial direction with respect to the drive shaft. It can be easily removed from the drive shaft.

Further , according to this feature configuration, since the blade portion and the drive shaft are fitted to each other at the fitting portion, the axial centers of the drive shaft and the blade portion can be aligned with each other.

The characteristic configuration of the batch type kneader according to the present invention is
A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft.
A first receiving portion is provided on the drive shaft on the outer side in the radial direction with respect to the coupling mechanism.
The first receiving portion is at a point at which the blade portion receives the movement of the blade portion toward the drive mechanism in the axial direction of the rotor shaft.

According to this feature configuration, the blade portion and the drive shaft are integrally rotatably coupled by the coupling mechanism, and the kneading material in the mixing tank can be kneaded by the blade portion by receiving the drive from the drive shaft. The blades are configured to be separable from the drive shaft. Therefore, for example, when replacing, repairing, or inspecting the blades, only the blades can be easily attached and detached while the drive shaft is assembled to the batch type kneader. Therefore, the work efficiency can be improved and the work time can be shortened as compared with the case where the drive shaft and the blade portion are integrally attached and detached.
When the kneading material is kneaded by the blade portion, a thrust force from the blade portion toward the drive mechanism side is applied to the first receiving portion provided on the drive shaft. In this case, the first receiving portion of the drive shaft is deformed so as to be expanded outward in the radial direction intersecting the axial center of the rotor shaft by being pressed by the thrust force from the blade portion toward the drive mechanism side. May be done. According to this feature configuration, the first receiving portion of the drive shaft is arranged on the outer side in the radial direction with respect to the coupling mechanism. Therefore, even if the first receiving portion of the drive shaft is deformed as described above, the deformation does not affect the coupling mechanism when the blade portion coupled by the coupling mechanism is separated from the drive shaft. , The blade can be easily separated from the drive shaft.

Further characteristic configurations of the batch type kneader according to the present invention are:
A second receiving portion for supporting the end portion of the blade portion on the side opposite to the drive mechanism side is provided.
The second receiving portion is at a point of receiving the movement of the blade portion in the axial direction of the rotor shaft to the side opposite to the drive mechanism side.

According to this feature configuration, the movement of the blade portion in the axial direction of the rotor shaft to the side opposite to the drive mechanism side is received by the second receiving portion. On the other hand, the movement of the blade portion toward the drive mechanism side in the axial direction of the rotor shaft is received by the first receiving portion. Therefore, since the bidirectional movement of the blade portion in the axial direction of the rotor shaft is prevented, the kneading material in the mixing tank can be satisfactorily kneaded.

The characteristic configuration of the batch type kneader according to the present invention is
A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft.
In the mixing tank, a first side plate connected to the drive mechanism side in the axial direction of the rotor shaft and
In the mixing tank, a second side plate connected to the side opposite to the drive mechanism and
With more
The rotor shaft penetrates the first side plate, the mixing tank, and the second side plate.
The point is that the second side plate can be separated from the mixing tank, or the second side plate and the mixing tank can be separated from the first side plate.

According to this feature configuration, the blade portion and the drive shaft are integrally rotatably coupled by the coupling mechanism, and the kneading material in the mixing tank can be kneaded by the blade portion by receiving the drive from the drive shaft. The blades are configured to be separable from the drive shaft. Therefore, for example, when replacing, repairing, or inspecting the blades, only the blades can be easily attached and detached while the drive shaft is assembled to the batch type kneader. Therefore, the work efficiency can be improved and the work time can be shortened as compared with the case where the drive shaft and the blade portion are integrally attached and detached.
Further , according to this feature configuration, the rotor shaft penetrates the first side plate, the mixing tank and the second side plate. When the second side plate is separated from the mixing tank, a part of the rotor shaft is exposed on the second side plate side of the mixing tank. Alternatively, when the second side plate and the mixing tank are separated from the first side plate, a part of the rotor shaft is exposed on the mixing tank side of the first side plate. By exposing a part of the rotor shaft and pulling out the blade portion to the side opposite to the drive mechanism, it is possible to separate only the blade portion from the drive shaft while the drive shaft of the rotor shaft is assembled to the batch type kneader.

Further characteristic configurations of the batch type kneader according to the present invention are:
A first bearing portion that supports the end portion of the rotor shaft on the drive mechanism side, and
A second bearing portion that supports an end portion of the rotor shaft opposite to the drive mechanism, and a second bearing portion.
With more
The second bearing portion and the second side plate unit having the second side plate are integrally separable from the mixing tank.

Since the second side plate unit in which the second bearing portion and the second side plate are integrated can be separated from the mixing tank, for example, the second bearing portion is separated from the rotor shaft, and then the second side plate is separated from the mixing tank. The efficiency of the separation work is better than the case where individual members are separated from each other. As a result, work efficiency such as replacement of blades of a batch type kneader can be improved, and work time can be shortened.

Further characteristic configurations of the batch type kneader according to the present invention are:
When the kneading of the kneading material in the mixing tank is completed, the discharge mechanism reverses the mixing tank with the rotation axis of any one of the plurality of rotor shafts as a rotation axis for changing the posture, or the mixing tank. The point is that the lower door is opened so that the mixture is discharged to the outside of the mixing tank.
Further characteristic configurations of the batch type kneader according to the present invention are:
The coupling mechanism is a mechanism for coupling the blade portion to the drive shaft along the axial direction of the rotor shaft.
By the coupling mechanism, the blade portion and the drive shaft can be integrally rotated, and the drive shaft can be separated from the blade portion. Examples of the binding mechanism include spline binding and key binding.
Further characteristic configurations of the batch type kneader according to the present invention are:
The blade portion includes at least a first blade and a second blade, and the first blade and the second blade are different from each other in the twisting direction of the rotor shaft with respect to the axial direction.
According to this feature configuration, in a batch type kneader, the kneading material can be efficiently kneaded in the mixing tank by making the twisting directions of the first blade and the second blade of the blade portion different from each other.
Further, since the twisting directions of the first blade and the second blade of the blade portion are different from each other, the first thrust force from the blade portion to the drive mechanism side in the axial direction of the rotor shaft and the blade portion in the axial direction of the rotor shaft A second thrust force is generated from the drive mechanism side to the side opposite to the drive mechanism side. Here, as described above, when the drive shaft is provided with the first receiving portion and the end portion of the blade portion is provided with the second receiving portion, the first thrust force is the first thrust force of the drive shaft. It is received by the first receiving portion, and the second thrust force is received by the second receiving portion at the end of the blade portion. Therefore, the bidirectional first and second thrust forces are firmly received. Therefore, even if the blades having blades having different twisting directions as described above generate a large thrust force in both directions due to a large hardness of the kneading material, the kneading material can be efficiently kneaded in the batch type kneader. It can be done well and stably .

The characteristic configuration of the blade portion replacement method according to the present invention is the blade portion replacement method in the batch type kneader described above, in which the blade portion is separated while the drive shaft is left.

It is a side view which shows the whole structure of the batch type kneader. It is a front view of the batch type kneader. It is sectional drawing in III-III of FIG. It is sectional drawing in IV-IV of FIG. It is a partially enlarged view of FIG. It is sectional drawing in VI-VI of FIG. It is a side view of the blade of the blade part main body. FIG. 7 is a view taken along the line VIII-VIII of FIG. FIG. 7 is an arrow view of IX-IX of FIG. It is sectional drawing which shows the flow of separation of a blade part from a drive shaft. It is sectional drawing which shows the flow of separation of a blade part from a drive shaft. It is an enlarged view which shows the state that the blade part is connected to the outer periphery of a drive shaft. It is sectional drawing which shows another example of the separation position of a blade part and a drive shaft.

[First Embodiment]
A batch-type kneader (hereinafter, abbreviated as a kneader) according to an embodiment of the present invention will be described with reference to the drawings. First, a schematic configuration of the kneading machine 10 will be described with reference to FIGS. 1 to 3. In the following, explanations will be given in the directions shown in FIGS. 1 and 2, that is, up, down, front, back, right, and left. However, this embodiment is not limited to this orientation.

(1) Schematic configuration of the kneader As shown in FIGS. 1 and 2, the kneader 10 kneads the kneading tank 13 for accommodating the kneading material charged from the upper opening and the kneading material in the mixing tank 13. Kneading is completed with the rotor shaft 40 having the blade portion 61, the drive mechanism V for rotationally driving the rotor shaft 40, and the pressurizing mechanism X having the pressurizing lid 19 for pressurizing the kneading material in the mixing tank 13 from above. A discharge mechanism Y for discharging the kneaded material from the mixing tank 13 and a control unit (not shown) for controlling the operation are provided.
Further, the kneader 10 according to the present embodiment is configured as a biaxial kneader having two rotor shafts 40.

In the above-mentioned kneader 10, as shown in FIGS. 1 and 3, the kneading material 18 is put into the mixing tank 13, the upper opening of the mixing tank 13 is closed by the pressure lid 19, and the rotor shaft having the blade portion 61 is provided. Rotate 40. As a result, the blade portion 61 having the blades 15 rotates, so that the blades 15 rotate in the space 16 between the mixing tank 13 and the blades 61. By rotating the blades 61 of the two rotor shafts 40 in different directions, the kneading material 18 passes between the inner wall of the mixing tank 13 and the outer periphery of the blades 61 to knead the blades 61. Kneading is performed by passing between the blade 15 protruding from the blade and the inner wall of the mixing tank 13, and kneading by passing between two blades 61 rotating in different directions.
The kneading material 18 is not particularly limited, and examples thereof include raw material rubbers such as natural rubber, isopylene rubber and butadiene rubber, which are tires for automobiles, and compounding agents such as carbon black, silica and zinc oxide.

(2) The configuration of each part will be described with reference to FIGS. 1 to 11.
(2-1) Drive mechanism As shown in FIGS. 2 and 4, the drive mechanism V includes a motor 109 as a power source for rotationally driving one of the two rotor shafts 40 on the drive side rotor shaft 40a. A speed reducer 107 that is connected to the drive-side rotor shaft 40a and reduces the rotation speed of the motor 109 with gears or the like to increase the output torque, a belt 108 that transmits power between the motor 109 and the speed reducer 107, and a speed reducer. It is provided with a gear mechanism 100 that transmits the rotation of the drive-side rotor shaft 40a, which is rotationally driven by the power from the machine 107, to the other driven-side rotor shaft 40b. The gear mechanism 100 mainly includes a drive gear 101 and a driven gear 103.
In FIG. 2, the motor 109, the belt 108, the speed reducer 107, etc. are shown small in the drawing, but they become large depending on the driving force to be generated, and the size compared with the rotor shaft 40, etc. is an actual one. May differ from.

The motor 109 generates a rotational driving force of the drive-side rotor shaft 40a and transmits it to the speed reducer 107 via the belt 108. The speed reducer 107 decelerates the rotational driving force from the motor 107 at a predetermined reduction ratio to generate a predetermined rotational driving force, which is output from the output shaft 106. The output shaft 106 of the speed reducer 107 is connected to the drive side rotor shaft 40a via a coupling 105 and a drive gear 101.
Specifically, in the coupling 105, a key groove (not shown) recessed on the outer diameter side is formed on the inner peripheral surface of the insertion hole 105a through which the output shaft 106 can be inserted, and the outer peripheral surface of the output shaft 106 is formed. Is formed with a key groove 106a recessed on the inner diameter side, and a key 53 is arranged across both key grooves. As a result, the coupling 105 and the output shaft 106 are integrally rotatably connected in the same rotation direction, and the coupling 105 is prevented from moving to the speed reducer 107 side (right side in FIG. 4) with respect to the output shaft 106. Has been done.

A large diameter portion 105b whose diameter is expanded to the outer diameter side is formed at the left end portion of the coupling 105, and a gear (not shown) is formed on the inner peripheral surface of the large diameter portion 105b. .. The gear of the large diameter portion 105b of the coupling 105 is configured to mesh with a gear (not shown) formed on the outer peripheral surface of the drive gear 101. As a result, the gear of the large diameter portion 105b of the coupling 105 and the gear of the drive gear 101 mesh with each other, and the coupling 105 and the drive gear 101 are integrally rotatably connected in the same rotation direction. Even if the drive gear 101 moves to the speed reducer 107 side (right side in FIG. 4) with respect to the coupling 105, it comes into contact with the left end surface extending from the insertion hole 105a to the outer diameter side, so that the drive gear 101 moves to the speed reducer 107 side. Can be prevented from moving.

The drive gear 101 is formed with a key groove (not shown) recessed on the outer diameter side on the inner peripheral surface of the insertion hole 101a through which the drive side rotor shaft 40a can be inserted, and is formed on the outer peripheral surface of the drive side rotor shaft 40a. Is formed with a key groove 51a recessed on the inner diameter side, and the key 51 is arranged across both key grooves. As a result, the drive gear 101 and the drive side rotor shaft 40a are integrally rotatably connected in the same rotation direction, and the drive side rotor shaft 40a is on the speed reducer 107 side (right side in FIG. 4) with respect to the drive gear 101. Relative movement is prevented. A male screw portion (not shown) is formed on the outer peripheral surface of the end portion of the drive side rotor shaft 40a on the speed reducer 107 side (right side in FIG. 4), and the male screw portion is stopped from rotating. The nut 102a is screwed on. This prevents the drive-side rotor shaft 40a from moving relative to the drive gear 101 on the side opposite to the speed reducer 107 side (left side in FIG. 4).

On the outer peripheral surface of the driven gear 103, a gear (not shown) that meshes with a gear (a gear that does not mesh with the gear of the coupling 105) formed on the outer peripheral surface of the drive gear 101 is formed. As a result, the gear of the driven gear 103 and the gear of the drive gear 101 mesh with each other so that the driven gear 103 and the drive gear 101 can rotate in different rotational directions.

In the driven gear 103, a key groove (not shown) recessed on the outer diameter side is formed on the inner peripheral surface of the insertion hole 103a through which the driven rotor shaft 40b can be inserted, and is formed on the outer peripheral surface of the driven rotor shaft 40b. Is formed with a key groove 52a recessed on the inner diameter side, and the key 52 is arranged across both key grooves. As a result, the driven gear 103 and the driven rotor shaft 40b are integrally rotatably connected in the same rotation direction, and the driven rotor shaft 40b is on the speed reducer 107 side (right side in FIG. 4) with respect to the driven gear 103. Relative movement is prevented. A male screw portion (not shown) is formed on the outer peripheral surface of the end of the driven rotor shaft 40b on the speed reducer 107 side (right side in FIG. 4), and the male screw portion is stopped from rotating. The nut 102b is screwed on. This prevents the driven rotor shaft 40b from moving relative to the driven gear 103 on the side opposite to the speed reducer 107 side (left side in FIG. 4).

(2-2) Pressurizing Mechanism As shown in FIG. 1, the pressurizing mechanism X includes a pressurizing lid 19 that closes an opening at the upper part of the mixing tank 13, a lid support portion 21 that supports the pressurizing lid 19, and a lid. It includes a drive cylinder 23 that drives the pressure lid 19 up and down via the support portion 21.
When the kneading material 18 is put into the mixing tank 13 from the upper opening, the pressurizing mechanism X drives the drive cylinder 23 according to the instruction from the control unit and applies the pressure mechanism X so as to close the upper opening of the mixing tank 13. The pressure lid 19 is lowered. When the two rotor shafts 40 are driven by the support of the control unit and the kneading of the kneading material is completed, the pressurizing mechanism X raises the pressurizing lid 19 according to an instruction from the control unit.

(2-3) Discharge Mechanism The discharge mechanism Y includes a swivel device (not shown) that swivels the mixing tank 13 and the like to a predetermined discharge position. The kneading material 18 is kneaded in the mixing tank 13 while being stored, and after that, when the kneading of the kneading material is completed and the pressurizing mechanism X raises the pressurizing lid 19, the discharge mechanism Y gives an instruction from the control unit. As a result, as shown in FIG. 1, the mixing tank 13 and the driven rotor shaft 40b are rotated with the driving side rotor shaft 40a as the rotation axis. Then, the posture of the mixing tank 13 is changed so that the opening faces downward as shown by the alternate long and short dash line in FIG. As a result, the kneaded material 18 that has been kneaded is discharged from the mixing tank 13 through the downward opening.
As described above, in the present embodiment, when the posture of the mixing tank 13 is changed and the kneading material 18 is discharged, the driven rotor shaft 40b is rotated with the driving side rotor shaft 40a as the rotation axis. At this time, the driven rotor shaft 40b rotates in response to a change in the posture of the mixing tank 13 while the driven gear 103 meshes with the drive gear 101. Therefore, when the postures of the mixing tank 13 and the driven rotor shaft 40b are changed, the speed reducer 107, the belt 108, and the motor 109 remain fixed at predetermined positions. Therefore, a large driving force is not required and the danger due to the rotation of the large device can be reduced as compared with the case where a relatively large device such as the speed reducer 107 rotates integrally with the mixing tank 13 or the like. ..
The completion of kneading of the kneading material means, for example, when the integrated value of the driving power in the drive mechanism V reaches a predetermined value, when it is visually determined that the kneaded material has been kneaded, and a predetermined time has elapsed from the start of kneading. Includes when you do.

(2-4) Rotor shaft The drive side rotor shaft 40a and the driven side rotor shaft 40b have a drive shaft 41 and a blade portion 61, respectively. Whether these rotor shafts 40 are connected to the drive gear 101 or not. Since the other configurations are the same except that they are connected to the driven gear 103, they will be described below with a focus on the drive-side rotor shaft 40a.
In the drive-side rotor shaft 40a of the present embodiment, the blade portion 61 is arranged adjacent to the extension of the drive shaft 41 along the axis A. That is, the drive shaft 41 is located on the reduction gear 107 side (right side) in the direction along the axis A (left-right direction), and the blade portion 61 is located on the opposite side (left side) of the reduction gear 107. There is. Further, the blade portion 61 is configured to be separable from the drive shaft 41 along the axis A. At this time, the blade portion 61 keeps the drive shaft 41 connected (remaining) to the drive mechanism V such as the drive gear 101, the driven gear 103, the coupling 105, the output shaft 106, and the speed reducer 107, and the drive shaft 41 It is separable from.

The drive shaft 41 includes a drive shaft body 43 on the drive gear 101 side extending along the axis A, and a cylindrical receiving end 45 extending along the axis A from the outer peripheral end of the drive shaft body 43. .. As shown in FIG. 4, the right end portion of the drive shaft main body 43 is connected to the drive gear 101. The receiving end portion 45 extends in a cylindrical shape along the axis A on the opposite side (left side) of the drive gear 101, and is recessed inward along the axis A toward the drive gear 101 side (right side). have.

The blade portion 61 includes a blade portion main body 17 extending along the axis A, a first small diameter portion 65 extending from the blade portion main body 17 to the drive shaft 41 side (right side) along the axial center A, and the blade portion main body 17. It has a second small diameter portion 66 extending along the axis A on the side (left side) opposite to the drive shaft 41 side. The first small diameter portion 65 and the second small diameter portion 66 are formed to have a smaller diameter than the blade portion main body 17. Further, the second small diameter portion 66 has a second intermediate small diameter portion 66b extending to the left side from the blade portion main body 17, and a second tip small diameter portion 66a extending to the left side from the second intermediate small diameter portion 66b. The second intermediate small diameter portion 66b and the second tip small diameter portion 66a are configured to taper stepwise from the blade portion main body 17 toward the opposite side (left side) of the drive shaft 41 side.

The blade portion main body 17 has annular outer peripheral end portions 111 (111α, 111β) formed at both ends thereof so as to extend outward in the radial direction from the first small diameter portion 65 and the second small diameter portion 66. The outer peripheral end portion 111α is formed at the right end of the blade portion main body 17, and the outer peripheral end portion 111β is formed at the left end of the blade portion main body 17. An annular groove 111a recessed from the surface of the outer peripheral end portion 111α (the surface intersecting the axis A) is formed between the outer peripheral end portion 111α on the drive shaft 41 side and the position adjacent to the first small diameter portion 65. Has been done. That is, an annular groove 111a recessed to the left along the axial center A direction is formed on the radial inward side of the outer peripheral end portion 111α.
Further, the blade portion main body 17 is formed with blades 15 which will be described in detail later.

Although the details will be described later, the drive shaft 41 and the blade portion 61 are integrally connected by inserting the first small diameter portion 65 of the blade portion 61 into the receiving recess 47 of the receiving end portion 45 of the drive shaft 41. The drive side rotor shaft 40a is configured. At this time, the inner peripheral surface of the receiving end portion 45 and the outer peripheral surface of the first small diameter portion 65 are coupled by the coupling mechanism 120.

Here, the coupling mechanism 120 that connects the receiving recess 47 and the first small diameter portion 65 has a fitting portion 120a and a spline coupling portion 120b, as shown in FIGS. 4, 5, 10 and the like. The fitting portion 120a is adjacent to the spline coupling portion 120b, and as shown in FIG. 11, the inner peripheral annular surface 120a2 of the receiving end portion 45 having no unevenness and the outer peripheral annular surface of the first small diameter portion 65 having no unevenness. It is configured so that it is in contact with 120a1. By abutting the inner peripheral annular surface 120a2 of the receiving end portion 45 and the outer peripheral annular surface 120a1 of the first small diameter portion 65, the axial center of the blade portion 61 and the axial center of the drive shaft 41 become the axial center A. Can be roughly matched.

Further, as shown in FIG. 6, the spline coupling portion 120b is a mechanism for spline coupling the inner peripheral surface of the receiving end portion 45 and the outer peripheral surface of the first small diameter portion 65. That is, as shown in FIG. 11, the inner peripheral surface of the receiving end portion 45 is formed to be radially inward from the inner peripheral annular surface 120a2 adjacent to the inner peripheral annular surface 120a2, and is formed in the axial direction A direction. A plurality of extending splines are formed in the circumferential direction. On the other hand, on the outer peripheral surface of the first small diameter portion 65, a plurality of splines are formed in the circumferential direction adjacent to the outer peripheral annular surface 120a1 so as to be recessed inward in the radial direction from the outer peripheral annular surface 120a1 and extend in the axial center A direction.

By fitting and coupling the receiving end portion 45 and the first small diameter portion 65, the rotational torque of the drive shaft 41 can be efficiently transmitted to the blade portion 61. Further, when the blade portion 61 is removed from the drive shaft 41, the blade portion 61 is driven along the axial center A direction with respect to the drive shaft 41 via a spline coupling between the receiving end portion 45 and the first small diameter portion 65. By sliding in the direction away from the shaft 41, the blade portion 61 can be easily removed from the drive shaft 41.
In order to prevent wear of the coupling mechanism 120, it is preferable to apply a lubricant such as oil or fat to the inner peripheral surface of the receiving end portion 45 and the outer peripheral surface of the first small diameter portion 65.

Further, the first small diameter portion 65 of the blade portion 61 is inserted into the receiving recess 47 of the receiving end portion 45 of the drive shaft 41, so that the groove 111a of the blade portion main body 17 and the receiving portion 113 come into contact with each other. Since the groove 111a and the receiving portion 113 are formed on the radial outer side of the coupling mechanism 120, the groove 111a of the blade portion main body 17 and the receiving portion 113 are formed on the radial outer side of the coupling mechanism 120. Contact at.

Here, with the first small diameter portion 65 inserted into the receiving recess 47, the second small diameter portion 66 of the blade portion 61 tightens the double nut 91 of the second bearing portion (second receiving portion) 90 described later. As a result, the drive gear 101 is pressed in the right direction in which the drive gear 101 is arranged, so that the groove 111a and the receiving portion 113 come into contact with each other without being displaced, and the blade portion 61 is coupled to the drive shaft 41. As a result, the blade portion 61 and the drive shaft 41 are coupled by the coupling mechanism 120, and are stably fixed along the axis A, so that the blade portion 61 is integrated with the rotation of the drive shaft 41. Rotates.

When the first small diameter portion 65 is inserted into the receiving recess 47 and the receiving portion 113 abuts on the groove 111a, the right end portion of the first small diameter portion 65 intersects with the axial center A direction of the receiving recess 47. A space S is formed between the bottom surface and the bottom surface. Therefore, even if a force is generated from the blade portion 61 toward the drive shaft 41 side (from left to right) and the first small diameter portion 65 is pushed toward the drive shaft 41 side, the right end portion of the first small diameter portion 65 is the receiving recess 47. Does not touch the bottom surface. Since the right end portion of the first small diameter portion 65 is not deformed, the blade portion 61 can be easily separated by being pulled out along the axial center A direction so as to be separated from the drive shaft 41 via the coupling mechanism 120.

Next, the configuration of the blade 15 of the blade main body 17 will be described with reference to FIGS. 7 to 9.
As shown in FIG. 7, two blades 15a and 15b having different twisting directions are provided on the outer peripheral surface 17a of the blade main body 17. As shown in FIG. 8 which is a view taken along the line VIII-VIII of FIG. 7, the blade 15a extends from the outer peripheral end portion 111β to the central portion of the blade portion main body 17 toward the outer peripheral end portion 111α. The blade 15a is formed by being surrounded by a top surface 15a1 that protrudes most from the outer peripheral surface 17a of the blade portion main body 17, and side surfaces 15a2 and side surfaces 15a3 that extend from the top surface 15a1 toward the outer peripheral surface 17a. The top surface 15a1 extends in an oblique direction forming an angle θa with respect to the axial center A, and is slightly twisted with respect to the outer peripheral surface 17a from the outer peripheral end portion 111β toward the tip. Further, the side surface 15a2 is composed of an inclined surface that spreads from the top surface 15a1 toward the outer peripheral surface 17a and increases toward the tip from the outer peripheral end portion 111β. The side surface 15a3 is an inclined surface on the opposite side to the side surface 15a2, and is composed of an inclined surface that spreads from the top surface 15a1 toward the outer peripheral surface 17a and decreases from the outer peripheral end portion 111β toward the tip.

On the other hand, FIG. 9 which is an arrow view of IX-IX of FIG. 7 is a view of the blade portion main body 17 of FIG. 7 viewed from a direction opposite to that of FIG. Has a shape that is flipped horizontally and vertically. The blade 15b is formed by being surrounded by a top surface 15b1 and a side surface 15b2 and a side surface 15b3 extending so as to extend from the top surface 15b1 toward the outer peripheral surface 17a. The top surface 15b1 extends slightly twisted with respect to the outer peripheral surface 17a from the outer peripheral end portion 111α toward the tip in an oblique direction forming an angle θb with respect to the axial center A. For example, the angle θb has a relationship of θb≈−θa. The side surface 15b2 is composed of an inclined surface that spreads from the top surface 15b1 toward the outer peripheral surface 17a and increases toward the tip from the outer peripheral end portion 111α. The side surface 15b3 is an inclined surface on the opposite side to the side surface 15b2, and is composed of an inclined surface that spreads from the top surface 15b1 toward the outer peripheral surface 17a and decreases from the outer peripheral end portion 111α toward the tip.

As described above, since the blades 15a and 15b extend from the outer peripheral end portion 111β and the outer peripheral end portion 111α by left-right and vertical inversion, respectively, the twisting directions are different with respect to the axial center A. Since the twisting direction is different between the blades 15a and 15b, the kneading direction of the kneading material is different depending on whether the kneading material is kneaded by the blades 15a or the blades 15b in the mixing tank 13. Efficient kneading can be performed by kneading the kneading material from various directions on both the blade 15a and the blade 15b by rotating the blade portion 61.

(2-5) First Side Plate Unit, Mixing Tank and Second Side Plate Unit In the drive side rotor shaft 40a having the above-mentioned drive shaft 41 and blade portion 61, the right end of the drive shaft 41 is supported by the first side plate unit 150. Then, the left end portion of the blade portion 61 is pivotally supported by the second side plate unit 160. Then, the first side plate unit 150 and the second side plate unit 160 support both ends of the drive side rotor shaft 40a, so that the blade portion is formed in the mixing tank 13 between the first side plate unit 150 and the second side plate unit 160. The blade main body 17 of 61 is accommodated.
The configurations of the first side plate unit 150, the mixing tank 13, and the second side plate unit 160 will be described below.

As shown in FIG. 1, the mixing tank 13 has a substantially U-shaped mixing tank body 31 having an open upper portion for charging the kneading material. Further, as shown in FIGS. 4 and 5, the mixing tank body 31 is open in the left-right direction and the upper portion is open for charging the kneading material. The blade portion main body 17 of the blade portions 61 of the two rotor shafts 40 extending along the axis A penetrates through the opening in the left-right direction of the mixing tank body portion 31. The mixing tank body 31 includes a body 31a extending along the axis A corresponding to the blade body 17, and flanges 31b and 31c bent outward from the left and right ends of the body 31a, respectively. Have.

Further, the first side plate unit 150 that pivotally supports the right end portion of the drive shaft main body 43 (drive shaft 41) includes a first bearing portion 80 and a first side plate 35.
The first side plate 35 supports the first bearing portion 80 while covering the right side of the mixing tank body portion 31 of the mixing tank 13. The first side plate 35 has a side plate main body 35a extending along the axis A and a locking portion 35b at the right end of the side plate main body 35a. Further, the first side plate 35 has a body side wall 35d that covers the right side of the mixing tank body 31 while penetrating the two rotor shafts 40. The body side wall 35d is formed by bending from the left end of the side plate main body 35a toward the blade portion 61, and has two openings 35e through which the two rotor shafts 40 can penetrate. Further, the first side plate 35 has a flange 35c that is bent outward from the left end of the side plate main body 35a and away from the two blade portions 61.

The first bearing portion 80 rotatably supports the drive shaft 41 between the right end portion connected to the drive gear 101 of the drive shaft main body 43 and the receiving end portion 45 as follows. .. The first bearing portion 80 includes a plurality of bearings 83 that rotatably support the drive shaft main body 43, a tubular first support portion 87 that supports the bearing 83 at a predetermined position, a tubular second support portion 89, and the like. It has a tubular collar 88. In this embodiment, three bearings 83 are arranged with respect to the drive shaft main body 43.

An annular locking step portion 86 formed of a step toward the inward side in the radial direction is formed on the outer peripheral surface of the drive shaft main body 43, and the bearing 83 is driven by the left end portion 83a on the inner diameter side of the bearing 83. It is locked to the locking step 86 by receiving a force toward the opposite side (left side) of the gear 101. Further, the second support portion 89 is formed with a bearing receiving portion 89b formed of a corner portion at substantially the same position as the locking step portion 86 in the axial center A direction, and the outer diameter of the bearing 83 is formed on the bearing receiving portion 89b. The left end 83b is locked on the side. The right end 83d on the outer diameter side of the bearing 83 is supported by the first support 87 arranged inside the second support 89. Further, the right end 83c on the inner diameter side of the bearing 83 is supported by a collar 88 which is fitted on the drive shaft main body 43 and extends to a position adjacent to the drive gear 101. The second support portion 89 is locked to the locking portion 35b of the first side plate 35 in the side plate receiving portion 89a formed of a step, and the side plate receiving portion 89a and the locking portion 35b are bolts and nuts ( (Not shown). With such a configuration, the bearing 83 is attached around the drive shaft main body 43, and is supported at a predetermined position by assembling with the first support portion 87, the second support portion 89, the first side plate 35, and the like.

Further, the first support portion 87 supports the bearing 83 and also supports the oil seal 73 provided on the right side of the bearing 83 via the space 72. Similarly, the second support portion 89 supports the bearing 83 and also supports the oil seal 70 provided on the left side of the bearing 83 via the space 71. The oil seals 70 and 73 can prevent the inflow of fluids such as lubricating oil, water, chemicals and gases, and foreign substances such as dust.

Further, the second side plate unit 160 that pivotally supports the left end portion of the second tip small diameter portion 66a of the blade portion 61 includes a second bearing portion 90 and a second side plate 37.
The second side plate 37 supports the second bearing portion 90 while covering the left side of the mixing tank body portion 31 of the mixing tank 13. The second side plate 37 has a side plate main body 37a extending along the axis A and a locking portion 37b at the left end of the side plate main body 37a. Further, the second side plate 37 has a body side wall 37d that covers the left side of the mixing tank body 31 while penetrating the two rotor shafts 40. The body side wall 37d is formed by bending from the right end of the side plate main body 35a toward the blade portion 61, and has two openings 37e through which the two rotor shafts 40 can penetrate. Further, the second side plate 37 has a flange 37c that is bent outward from the right end of the side plate main body 37a and away from the two blade portions 61.

The second bearing portion 90 pivotally supports the blade portion 61 at the tip of the second tip small diameter portion 66a as follows. The second bearing portion 90 includes a double nut 91, a bearing 93 that rotatably supports the blade portion 61, a tubular first support portion 97 that supports the bearing 93 at a predetermined position, and a tubular second support portion 99. And a tubular collar 95. In this embodiment, one bearing 93 is arranged with respect to the drive shaft main body 43.

A locking step portion 96 formed of a step toward the inward side in the radial direction is formed on the outer peripheral surface of the second tip small diameter portion 66a, and the bearing 93 is driven by the right end portion 93a on the inner diameter side of the bearing 93. It is locked to the locking step 96 by receiving a force toward the gear 101 side (right side). Further, the second support portion 99 is formed with a corner portion 99b on the drive shaft 41 side (right side) of the locking step portion 96 in the axial center A direction. The corner portion 99b corresponds to the right end portion 93b on the outer diameter side of the bearing 93, but a predetermined gap 58a is provided between the corner portion 99b and the end portion 93b of the bearing 93.

The end portion 93d of the bearing 93 is supported by the first support portion 97 arranged inside the second support portion 99. Here, the second tip small diameter portion 66a is formed with a male screw portion 67 at the leftmost leftmost end portion on the left side of the left side end portion supported by the second bearing portion 90. A double nut 91 is fitted into the male screw portion 67. The double nut 91 presses the collar 95 by being tightened to the right side, and the pressed collar 95 supports the left end portion 93c on the inner diameter side of the bearing 93. The second support portion 99 is locked to the locking portion 37b of the second side plate 37 in the side plate receiving portion 99a formed of a step, and the side plate receiving portion 99a and the locking portion 37b are bolts and nuts ( (Not shown). With such a configuration, the bearing 93 is attached around the second tip small diameter portion 66a, and is supported at a predetermined position by assembling with the first support portion 97, the second support portion 99, the second side plate 37, and the like. ..

With the bearing 93, the first support portion 97, the second support portion 99, the second side plate 37, and the like assembled in this way, as described above, the corner portion 99b of the second support portion 99 and the end portion 93b of the bearing 93 are assembled. A predetermined gap 58a is provided between the bearing and the bearing. That is, a corner portion 99b is formed on the second support portion 99 on the right side of the locking step portion 96, and a gap 58a is provided. Therefore, the force in the left direction from the drive shaft 41 side toward the blade portion 61 side is transmitted to the bearing 93 before the second support portion 99. Then, the force transmitted to the bearing 93 can be released to the first support portion 97 and the second support portion 99 that support the bearing 93, and can be released to the second side plate 37. Therefore, the force in the left direction from the drive shaft 41 side toward the blade portion 61 side can be sufficiently received.

Further, the first support portion 97 supports the bearing 93 and also supports the oil seal 55 provided on the left side of the bearing 93 via the space 57. Similarly, the second support portion 99 supports the bearing 93 and also supports the oil seal 59 provided on the right side of the bearing 93 via the space 58.

In the first side plate unit 150, the mixing tank 13 and the second side plate unit 160 configured in this way, the drive side rotor shaft 40a is arranged and assembled as follows.
The blade portion 31 is made to correspond to the mixing tank body 31 of the mixing tank 13, and the blade portion 61 is passed through the opening 35e of the first side plate 35 and the opening 37e of the second side plate 37. 31c and the flange 35c of the first side plate 35 are fixed by bolts and nuts 133. Similarly, the flange 31b of the mixing tank body 31 and the flange 37c of the second side plate 37 are fixed by bolts and nuts 131.

When the blade portion main body 17 corresponds to the mixing tank 13, the first small diameter portion 65 of the blade portion 61 corresponds to the first side plate 35, the second intermediate small diameter portion 66b corresponds to the second side plate 37, and the second tip ends. The small diameter portion 66a extends beyond the second side plate 37 to the left side along the axis A.

On the other hand, the drive shaft 41 is arranged so that the receiving end portion 45 corresponds to the first side plate 35 and the drive shaft main body 43 corresponds to the drive gear 101 side with respect to the first side plate 35.
Then, by inserting the first small diameter portion 65 of the blade portion 61 into the receiving recess 47 of the receiving end portion 45 of the drive shaft 41, the first small diameter portion 65 of the blade portion 61 and the receiving end portion of the drive shaft 41 are inserted. Both 45 are located corresponding to the first side plate 35.

Further, a part of the outer peripheral end portion 111α of the blade portion main body 17 on the radial outer side and the body side wall 35d of the first side plate 35 are overlapped with each other with a gap in the axial center A direction. It is arranged like this. Similarly, a part of the outer peripheral end portion 111β on the outer side in the radial direction and the body side wall 37d of the second side plate 37 are arranged so as to overlap each other with a gap in the axial direction A direction. ing.

Further, the opening 35e of the first side plate 35 has a predetermined gap between the receiving end portion 45 of the drive shaft 41, the body side wall 37d, and the outer peripheral end portion 111α in a state where the drive side rotor shaft 40a penetrates. A mechanical seal 49 is provided in this gap. Similarly, the opening 37e of the second side plate 37 is predetermined between the second intermediate small diameter portion 66b of the blade portion 61, the body side wall 37d, and the outer peripheral end portion 111β in a state where the two rotor shafts 40 penetrate. It has a gap and is provided with a mechanical seal 49.

From the above, both ends of the drive-side rotor shaft 40a including the blade portion 61 and the drive shaft 41 are rotatably supported by the first side plate unit 150 and the second side plate unit 160, and the drive-side rotor shaft 40a is supported by the speed reducer 107. It is pressed to the side (right side), and the entire drive-side rotor shaft 40a is stably fixed to the drive gear 101.

(3) Receiving the thrust force by the kneading machine Next, the receiving of the thrust force by the kneading machine 10 configured as described above will be described.
As described above, the blades 15a and 15b provided on the blade main body 17 have different twisting directions with respect to the axial center A. As a result, the kneading material can be kneaded efficiently.
Here, since the twisting directions of the blades 15a and 15b are different, the blade portion 61 receives a force from the kneading material by kneading the kneading material in the mixing tank 13, and the blade portion 61 receives a force from the blade portion 61 on the drive shaft 41 side (from the left). A first thrust force toward the right side) and a second thrust force from the blade portion 61 toward the side opposite to the drive shaft 41 (from right to left side) are generated. The first thrust force from the blade portion 61 toward the drive shaft 41 side (from left to right) is applied to the receiving portion (first receiving portion) 113 of the drive shaft 41. In this case, the receiving portion 113 of the drive shaft 41 is pressed against the groove 111a of the blade portion main body 17 by the first thrust force, so that the receiving portion 113 is expanded outward in the radial direction intersecting the axial center A of the rotor shaft 40. It may be deformed so that it can be used. As described above, the receiving portion 113 of the drive shaft 41 is provided on the outer side in the radial direction with respect to the coupling mechanism 120. Therefore, even if the receiving portion 113 of the drive shaft 41 is deformed as described above, when the blade portion 61 coupled by the coupling mechanism 120 is separated from the drive shaft 41, the deformation is caused to the coupling mechanism 120. The blade portion 61 can be easily separated from the drive shaft 41 without affecting it.

Further, the second thrust force from the drive shaft 41 toward the blade portion 61 side (from right to left side) is received by the second bearing portion (second receiving portion) 90. That is, the second thrust force is transmitted to the bearing 93 that is locked to the locking step portion 96 of the blade portion 61, escapes to the first support portion 97 and the second support portion 99 that support the bearing 93, and is released to the second side plate. It is accepted by being transmitted to 37.

From the above, the bidirectional first and second thrust forces along the axis A direction are the receiving portion (first receiving portion) 113 and the second bearing portion (second receiving portion) of the drive shaft 41, respectively. It is firmly received by 90. Therefore, the batch type kneader 10 is provided with a blade portion 61 having blades 15a and 15b having different twisting directions as described above, for example, when the hardness of the kneading material is large and a large thrust force is generated in both directions. However, the kneading material can be kneaded efficiently and stably.

(4) Method for separating the blade portion from the drive shaft Next, a method for separating the blade portion 61 while leaving the drive shaft 41 will be described with reference to FIGS. 10 and 11.
As shown in FIG. 10, first, with the blade portion 61 integrally connected to the drive shaft 41, the double nut 91, the second bearing portion 90, and the second side plate 37, which are members on the left side of the second side plate 37, are first formed. Remove. The order is not particularly limited as long as these members can be removed. For example, first, the double nut 91 fitted in the male screw portion 67 of the second tip small diameter portion 66a of the blade portion 61 is rotated and removed. After that, the bolts and nuts 131 are loosened to separate the second side plate 37 from the mixing tank body 31. As a result, the second side plate unit 160 including the second side plate 37 and the second bearing portion 90 is separated from the mixing tank body portion 31.
At this time, since the second bearing portion 90 is removed together with the second side plate 37, the rotor shaft 40 including the blade portion 61 and the drive shaft 41 is cantilevered and supported by the first side plate unit 150 including the first bearing portion 80. ing. Therefore, in order to sufficiently support the weight of the rotor shaft 40, the rotor shaft 40 including the blade portion 61 and the drive shaft 41 is supported by a plurality of bearings 83.

Next, as shown in FIG. 11, the blade portion 61 is pulled out from the drive shaft 41 so as to move away from the drive shaft 41 along the axial center A direction. At this time, the first small diameter portion 65 of the blade portion 61 is inserted into the receiving recess 47 formed by the receiving end portion 45 of the drive shaft 41, and the first small diameter portion 65 and the receiving end portion 45 are spline-coupled. ing. Therefore, the first small diameter portion 65 is slid with respect to the receiving end portion 45, and the blade portion 61 is separated from the drive shaft 41. At this time, the drive shaft 41 of the drive-side rotor shaft 40a remains connected to the first bearing portion 80, the drive gear 101, the coupling 105, the output shaft 106, the speed reducer 107, and the like. The drive shaft 41 of the driven rotor shaft 40b remains connected to the first bearing portion 80, the driven gear 103, and the like.

As described above, the blade portion 61 is configured to be separable from the drive shaft 41. Therefore, for example, when the blade portion 61 is replaced, only the blade portion 61 can be easily attached and detached while the drive shaft 41 is assembled to the batch type kneader 10. Therefore, the work efficiency can be improved and the work time can be shortened as compared with the case where the drive shaft 41 and the blade portion 61 are integrally attached and detached.
Further, the blade portion 61 may be coupled to the drive shaft 41 in the reverse procedure of the above. For example, in a state where the second side plate unit 160 is separated from the mixing tank body 31, the replacement blade 61 is inserted into the drive shaft 41 side along the axis A direction. After that, the second side plate unit 160 is attached to the mixing tank body 31 with bolts and nuts 131, and the double nut 91 is fitted into the male screw portion 67 of the second tip small diameter portion 66a of the blade portion 61 and tightened. As a result, the blade portion 61 can be integrally rotatably coupled to the drive shaft 41.
The replacement includes repair and inspection.

Further, the drive mechanism V that rotationally drives the drive shaft 41 includes a drive gear 101, a driven gear 103, a coupling 105, an output shaft 106, a speed reducer 107, a motor 109, and the like, and has a large number of parts. According to the above configuration, since it is not necessary to attach / detach the drive shaft 41 to / from the drive mechanism V when replacing the blade portion 61 or the like, the work of disassembling the drive mechanism V and the work of assembling the drive mechanism V which requires accuracy are omitted. be able to.

Further, when the blade portion 61 is removed from the drive shaft 41, the second side plate unit 160, which is a member on the left side of the mixing tank body portion 31, is separated as an integral unit, so that the work is easy and the work time can be shortened.

[Other Embodiments]
(1) In the above embodiment, the rotor shaft 40 is configured to be integrally rotatable in a state where the blade portion 61 is adjacent to the extension of the axis A of the drive shaft 41, and the blade portion 61 is configured as the drive shaft 41. Can be separated from the drive shaft 41 while leaving the above. However, if the blade portion 61 is separated from the drive shaft 41 and is detachably and integrally rotatablely coupled, the present invention is not limited to the above configuration, and the blade portion main body 17 (blade portion 61) is the drive shaft as shown in FIG. Other configurations may be attached to the outer periphery of the 41. Hereinafter, the configuration of FIG. 12 will be described, but the same configuration as that of the above embodiment will be omitted or simplified.

In FIG. 12, the drive shaft 41 extends along the axial center A direction, and the receiving end portion 45 and the receiving recess 47 as in the drive shaft 41 of the above embodiment are not formed. Although not shown, the right end portion is pivotally supported by the first side plate unit 150 having the first bearing portion 80 shown in the above embodiment, and is connected to the output shaft 106 of the speed reducer 107 via the drive gear 101. It is connected. Further, the left end portion of the drive shaft 41 is pivotally supported by a second side plate unit (second receiving portion) 160 having the second bearing portion 90 shown in the above embodiment. Therefore, both ends of the drive shaft 41 of FIG. 12 are pivotally supported, and extend from one end to the other end along the axis A.

The blade portion main body 17 is a cylindrical member having an inner peripheral diameter that substantially matches the outer peripheral diameter of the drive shaft 41, and a plurality of blades 15 having different twisting directions are formed on the outer peripheral surface. The blade portion main body 17 surrounds the outer circumference of the drive shaft 41 and is attached to a portion corresponding to the mixing tank 13 shown in FIG. 2 and the like. In a state where the blade main body 17 is attached to the drive shaft 41, the axial center of the blade main body 17 and the axial center of the drive shaft 41 substantially coincide with each other in the axial center A. The blade portion main body 17 has outer peripheral end portions 111α and 111β at both ends in the axial center A direction.

The drive shaft 41 and the blade body 17 are coupled by a coupling mechanism 120 so that the blade body 17 can slide along the axis A with respect to the drive shaft 41. The coupling mechanism 120 includes a spline coupling portion 120b, a fitting portion 120aL on the left side of the spline coupling portion 120b, and a fitting portion 120aR on the right side of the spline coupling portion 120b. The fitting portions 120aL and 120aR are configured such that the inner peripheral annular surface without unevenness of the blade portion main body 17 and the outer peripheral annular surface without unevenness of the drive shaft 41 are in contact with each other, and the blade portion main body 17 is formed by this contact. The axis of the drive shaft 41 and the axis of the drive shaft 41 can be substantially aligned with the axis A.
The spline coupling portion 120b is a mechanism for spline coupling the outer peripheral surface of the drive shaft 41 and the inner peripheral surface of the blade portion 61 to integrally rotate the drive shaft 41 and the blade portion 61. The details of the spline coupling portion 120b have the same configuration as that of the above embodiment.

The blade portion main body 17 coupled to the drive shaft 41 in this way is fixed to the drive shaft 41 by the second side plate unit 160 and the receiving portion 113 (first receiving portion) of the drive shaft 41 as follows. .. The second side plate unit 160 includes a double nut 91, a second bearing portion 90 including two bearings 93α and 93β, and a collar 151 (second receiving portion). The collar 151 is provided between the double nut 91 and the bearing 93α, between the two bearings 93α and 93β, and between the bearing 93β and the left end surface of the blade body 17. Further, the receiving portion 113 of the drive shaft 41 is formed from a step recessed inward in the radial direction. The receiving portion 113 is provided on the outer side in the radial direction with respect to the coupling mechanism 120.

When the double nut 91 is fitted into the male screw portion 67 formed on the left side of the second bearing portion 90 of the drive shaft 41 and tightened to the right side, the bearings 93α, 93β and the collar 151 are pushed to the right side. As a result, the left end surface of the blade body 17 is pushed to the right by the collar 151, and a part of the right end surface of the blade body 17 is pressed against the receiving portion 113 of the drive shaft 41, and as a result, the blade body 17 Is fixed at a predetermined position on the drive shaft 41.

In the above configuration, when the blade portion 61 is replaced, as shown in FIG. 10, a second side plate including a double nut 91, a second bearing portion 90, and a second side plate 37 is provided, as in the above embodiment. Remove the unit 160 and. Next, the blade portion 61 is pulled out in the direction away from the drive shaft 41 along the axial center A direction. As a result, only the blade portion 61 can be easily attached and detached while the drive shaft 41 is assembled to the batch type kneader 10.

The first thrust force from the second bearing portion 90 that pivotally supports the drive shaft 41 toward the drive gear 101 side (from left to right) is applied to the receiving portion (first receiving portion) 113 of the drive shaft 41 and is received. The portion 113 may be deformed so as to be pushed outward in the radial direction. However, since the receiving portion 113 is provided on the outer side in the radial direction with respect to the coupling mechanism 120, the deformation thereof is coupled when the blade portion 61 coupled by the coupling mechanism 120 is separated from the drive shaft 41. The blade portion 61 can be easily separated from the drive shaft 41 without affecting the mechanism 120.
Further, the second thrust force from the drive gear 101 toward the second bearing portion 90 side (from right to left side) is received by the collar 151. That is, the second thrust force is transmitted to the collar 151 and is received by being transmitted to the second bearing portion 90 and the double nut 91.

(2) In the above embodiment, in the portion corresponding to the first side plate 35, the first small diameter portion 65 of the blade portion 61 and the receiving end portion 45 of the drive shaft 41 are integrally rotatably coupled by the coupling mechanism 120. There is. The blade portion 61 can be separated from the drive shaft 41 via the coupling mechanism 120 of the portion corresponding to the first side plate 35.
However, it suffices if the blade portion 61 can be separated from the drive shaft 41 while the drive shaft 41 is attached to the drive mechanism V, and the separation position between the blade portion 61 and the drive shaft 41 is not limited to the portion corresponding to the first side plate 35. For example, as shown in FIG. 13, the separation position between the blade portion 61 and the drive shaft 41 may be outside the mixing tank 13, the first side plate 35, and the second side plate 37.
In FIG. 13, as an example, the first small diameter portion 65 of the blade portion 61 and the receiving end portion 45 of the drive shaft 41 are connected to each other near the left side of the drive gear 101 and near the right side of the first side plate unit 150. The configuration combined by 120 is shown. In the portion where the coupling mechanism 120 is provided, the blade portion 61 can be separated from the drive shaft 41. The other configurations are the same as those in the above embodiment except that the separation positions of the blade portion 61 and the drive shaft 41 are different.

(3) In the above embodiment, the posture is changed by the discharge mechanism Y so that the upper opening of the mixing tank 13 faces downward, and the kneaded material 18 that has been kneaded is discharged from the inside of the mixing tank 13. However, in the kneading machine 10, the method of discharging the kneading material 18 is not limited to this. For example, the discharge mechanism Y may be configured to provide a discharge lid (door) for discharge and an opening / closing mechanism at the lower part of the mixing tank 13. Then, after kneading while the kneading material is stored in the mixing tank 13, when the kneading of the kneading material 18 is completed, the opening / closing mechanism opens the discharge lid at the lower part of the mixing tank 13 in response to an instruction from the control unit. .. As a result, the kneaded material 18 that has been kneaded can be discharged from the mixing tank 13.

(4) In the above embodiment, as shown in FIG. 10, the second side plate unit 160 including the second side plate 37 and the second bearing portion 90 is separated from the mixing tank body portion 31. After that, the blade portion 61 is pulled out from the drive shaft 41 so as to move away from the drive shaft 41 along the axial center A direction. However, the method for separating the first side plate unit 150, the mixing tank body 31 and the second side plate unit 160 is not limited to this. For example, it can be separated as follows. First, the double nut 91 fitted in the male screw portion 67 of the blade portion 61 is rotated and removed. After that, the bolts and nuts 133 are loosened, and the second side plate unit 160 and the mixing tank body 31 are integrated and separated from the first side plate unit 150. Then, the blade portion 61 is pulled out along the axial center A direction so as to be away from the drive shaft 41. When connecting the blade portion 61 to the drive shaft 41, the procedure is the reverse of the above.

(5) In the above embodiment, one of the two rotor shafts 40 is connected to the drive gear 101, and the remaining one rotor shaft 40 is connected to the driven gear 103. However, drive gears 101 are provided corresponding to each of the two rotor shafts 40, and the output shaft 106 is connected to each drive gear 101 so that each rotor shaft 40 is independently driven and rotated. You may be.

(6) In the above embodiment, the first small diameter portion 65 of the blade portion 61 and the receiving end portion 45 of the drive shaft 41 are integrally rotatably coupled by the spline coupling portion 120b of the coupling mechanism 120. However, these bonds are not limited to the bonds formed by the spline coupling portion 120b, and may be, for example, a key bond.

(7) In the above embodiment, the twisting direction is different between the blade 15a and the blade 15b. However, the blades 15a and the blades 15b may have different lengths, protrusion heights, and the like of the top surface 15a1 on the surface of the blade portion main body 17 in addition to the twisting direction.

(8) In the above embodiment, when the first small diameter portion 65 is inserted into the receiving recess 47, the receiving portion 113 of the drive shaft 41 comes into contact with the groove 111a of the blade portion main body 17. However, the groove 111a may not be formed in the blade main body 17, and the receiving portion 113 of the drive shaft 41 may be in contact with the opposite outer peripheral end surface of the blade main body 17.

(9) In the above embodiment, a closed type batch type kneader in which the mixing tank 13 is sealed by the pressure lid 19 has been described as an example, but an open type batch type in which the mixing tank 13 is not sealed by the pressure lid 19 has been described. The present invention can also be applied to the kneading machine of.

(10) In the above embodiment, the blade portion main body 17 is provided with two blades 15, but three or more blades 15 may be provided.

The configurations disclosed in the above-described embodiments (including other embodiments, the same shall apply hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as there is no contradiction. , The embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified without departing from the object of the present invention.

10: Kneading machine 13: Mixing tank 15: Blade 15a: Blade 15b: Blade 16: Space 17: Blade body 17a: Outer peripheral surface 18: Kneading material 19: Pressurized lid 21: Lid support 23: Drive cylinder 31: Mixing Tank body 31a: Body body 31b: Flange 31c: Flange 35: First side plate 35a: Side plate body 35b: Locking part 35c: Flange 35d: Body side wall 35e: Opening 37: Second side plate 37a: Side plate body 37b: Locking portion 37c: Flange 37d: Body side wall 37e: Opening 40: Rotor shaft 40a: Drive side rotor shaft 40b: Driven side rotor shaft 41: Drive shaft 43: Drive shaft body 45: Receiving end 47: Receiving recess 49: Mechanical seal 51: Key 51a: Key groove 52: Key 52a: Key groove 53: Key 55: Oil seal 57: Space 58: Space 58a: Gap 59: Oil seal 61: Flange 65: First small diameter part 66: Second Small diameter part 66a: Second tip small diameter part 66b: Second intermediate small diameter part 67: Male screw part 70: Oil seal 71: Space 72: Space 73: Oil seal 80: First bearing part 83: Bearing 83a: End part 83b: End 83c: End 83d: End 86: Locking step 87: First support 88: Collar 89: Second support 89a: Side plate receiving 89b: Bearing receiving 90: Second bearing 91: Double Nut 93: Bearing 93a: End 93b: End 93c: End 93d: End 95: Collar 96: Locking step 97: First support 99: Second support 99a: Side plate receiving 99b: Corner 100: Gear mechanism 101: Drive gear 101a: Insertion hole 102a: Nut 102b: Nut 103: Driven gear 103a: Insertion hole 105: Coupling 105a: Insertion hole 105b: Large diameter portion 106: Output shaft 106a: Key groove 107: Deceleration Machine 108: Belt 109: Motor 111: Outer peripheral end 111a: Groove 111α: Outer peripheral end 111β: Outer end 113: Bearing 120: Coupling mechanism 120a: Fitting portion 120a 1: Outer annular surface 120a2: Inner annular surface 120b: Spline joint 131: Nut 133: Nut 150: First side plate unit 160: Second side plate unit A: Axis S: Space V: Drive mechanism X: Pressurization mechanism Y: Discharge mechanism

Claims (9)

A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft.
The coupling mechanism has a spline coupling portion and has a spline coupling portion.
The coupling mechanism is a batch type that is adjacent to the spline coupling portion along the axial direction of the rotor shaft and further has a fitting portion in which the annular surface of the drive shaft and the annular surface of the blade portion are fitted. Kneading machine. A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft.
A first receiving portion is provided on the drive shaft on the outer side in the radial direction with respect to the coupling mechanism.
The first receiving portion is a batch type kneader that receives the movement of the blade portion toward the drive mechanism side in the axial direction of the rotor shaft. A second receiving portion for supporting the end portion of the blade portion on the side opposite to the drive mechanism side is provided.
The batch-type kneader according to claim 2, wherein the second receiving portion receives the movement of the blade portion in the axial direction of the rotor shaft to the side opposite to the drive mechanism side. A mixing tank that houses the kneading material and
Equipped with a drive mechanism that drives the rotor shaft to rotate
The rotor shaft has a drive shaft driven by the drive mechanism and a blade portion for kneading the kneading material in the mixing tank.
A coupling mechanism that integrally rotatably couples the blade and the drive shaft,
Kneading is performed while the kneading material is stored in the mixing tank, and when the kneading of the kneading material in the mixing tank is completed, the kneading material is discharged from the mixing tank.
The blade portion is configured to be separable from the drive shaft.
In the mixing tank, a first side plate connected to the drive mechanism side in the axial direction of the rotor shaft and
In the mixing tank, a second side plate connected to the side opposite to the drive mechanism and
With more
The rotor shaft penetrates the first side plate, the mixing tank, and the second side plate.
A batch-type kneader in which the second side plate can be separated from the mixing tank, or the second side plate and the mixing tank can be separated from the first side plate. A first bearing portion that supports the end portion of the rotor shaft on the drive mechanism side, and
A second bearing portion that supports an end portion of the rotor shaft opposite to the drive mechanism, and a second bearing portion.
With more
The batch-type kneader according to claim 4, wherein the second bearing portion and the second side plate unit having the second side plate can be integrally separated from the mixing tank. When the kneading of the kneading material in the mixing tank is completed, the discharge mechanism reverses the mixing tank with the rotation axis of any one of the plurality of rotor shafts as a rotation axis for changing the posture, or the mixing tank. The batch-type kneader according to any one of claims 1 to 5, which is configured to open the lower door and discharge the mixture to the outside of the mixing tank. The batch-type kneader according to any one of claims 1 to 6, wherein the coupling mechanism is a mechanism for coupling the blade portion to the drive shaft along the axial direction of the rotor shaft. Any one of claims 1 to 7, wherein the blade portion includes at least a first blade and a second blade, and the first blade and the second blade have different twisting directions with respect to the axial direction of the rotor shaft. The batch type kneader described in the section. The method for exchanging blades in the batch type kneader according to any one of claims 1 to 8.
A method for replacing blades, which separates the blades while leaving the drive shaft.

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